Music-leaf turner.



N0 MODEL.

I 1". von HOLZHAUSEN.

MUSIC LEAF TURNER.

APPLIOATION FILED SEPT. 8. 1 904.

PATENTED OUT. 25, 1904.

- UNITED STATES Patented October 25, 1904.

PATENT Orricn.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 773,075, dated October 25, 1904.

v Application filed September 8, 1904. Serial No. 223,731. (No model.)

To ctZZ whom, it may concern:

Be it known that I, FRITZ VON HOLZHAUSEN,

' a subject of the Emperor of Austria-Hungary,

and a resident of Frankfort-on-the-Main, Germany, have invented certain new and useful Improvements in Music Leaf Turners, of which the following is a specification.

My invention relates to improvements in music-leaf turners of that kind in which a turnable arm carrying at the free end a horseshoe-magnet is employed for turning the music-leaves" by means of iron pieces secured on the latter, whereby a greater safety and reliability of the device is obtained.

The objects of my improvement are, first, to hinge the horseshoe-magnet to an adjustable sleeve on the turnable arm; second, to provide a ledge on the upper edge of the nearly-vertical desk; third, to provide means for turning the turnable arm around a pin on the upper edge of the desk; fourth, to provide means for limiting the turning motion of the turnable arm, and, fifth, to so arrange the turnable arm as to cause the horseshoe-magnet to turn upward in the one extreme position by reason of its live force for attracting but one music-leaf and in the other extreme position with the aid of the ledge for releasing the music-leaf. I attain these objects by the mechanism illustrated ing drawings, in which- Figure 1 is an elevation of the music-leaf turner, the supports of the desk being omitted and the pedal turned through an angle of ninety degrees and shown in side view. Fig. 2 is a side view of the desk, the turnable arm, with the horseshoe-magnet and a music-leaf, being turned to the front and the connection 7c of Fig. 1 being omitted. Fig. 3 is an elevation, on an enlarged scale, of the horseshoemagnet and the adjustable sleeve; and Fig. 4 is a side view of the same.

Similar letters of reference refer to similar parts throughout theseveral views.

The nearly-vertical music-desk y is provided with an adjustable rule Z of any known and approved construction which can be vertically adjusted so as to bring the upper edges of the music-leaves n n close to the upper edge of the desk y. A projecting ledge in the accompanyb is fastened on the left part of the upper desk edge. A suitable pin (not shown) is secured in the middle of the upper edge of the desk y in the line A B, on which pin a pulley 0 is mounted to turn. A thin wire or cord (Z is placed around the pulley c and fastened with its end on the same at a convenient point. This wire cl passes through a conducting channel or tubefand an elastic tube or hoselt' clownward and is connected with its other end to a pedal 3) of any known construction. The tube f is shown as embedded for the most part in a channel in the desk and the flexible tube or hose is is shown as connected with the tube f and with a support 0 of the pedal 1) by means of screw-joints s s or the like. On the lengthened nave of the pulley c the nave of an arm a is secured. A helical spring 0' is fastened with the one end on the ledge b and with the other end on the nave of the pulley c and is so arranged as to normally hold the arm a in the right extreme position, as shown by the full lines in Fig. l.

A sleeve /t, Fig. 1, of a convenient construction is mounted to slide on the arm ct and can be secured thereon in any known manner, (not shown.) be it by means of an adjustingscrew or the like. This sleeve it is provided with a hinge g, in which a pin q, passing through the bent part of a horseshoe-magnet m, is mounted to turn. horseshoe-magnet m is connected with the adjustable sleeve 7 and allowed to turn upward, as is indicated by the dotted lines in Fig. a. A plate w,of insulating material, such as pasteboard or the like, is secured on the one side of the horseshoe-magnet m and is arranged to slide on the ledge b.

On the under side of the pulley 0 two pins 2 .2 are disposed on opposite sides and arranged to strike against a stop 25, secured on the upper edge of the desk y.

Each music-leaf n when placed on the right in Fig. 1 is provided on the front face at the upper right corner with an iron piece 6, serving as an armature of the horseshoe-magnet m.

The music-leaf turner is operated as follows: The music-book is placed and so adjusted on the desk y by means of the rule Z as to bring its back exactly over the axis AB of the pul- In this manner the ley c and the arm a, while the upper edges of the leaves a n are close to the upper desk edge. The sleeve it is so adjusted on the arm a that the iron pieces 0 on the leaves a are in the path of the horseshoe-magnet m. The two pins are so disposed on the pulley c that in the extreme position of the arm a on the right, as shown in Fig. 1, the horseshoe-magnet m remains at a certain distance from the uppermost iron piece 6 and that in the other extreme position of the arm a on the left. as indicated by the dotted lines in Fig. 1, about the lowermost edge of the insulating-plate a; rests on the ledge b, so that the horseshoemagnet is not only turned upward, but also completely detached from the upper edges of the left music-leaves a. The suitable distance of the horseshoe-magnet from the music-leaves 72/ on the right and its convenient position on the ledge 7) on the left can be easily found by trials. When the pedal 3) has been depressed to turn the arm a from right to left and again released, then the helical spring 2' will let the arm a fly back from left to right, so that the horseshoe-magnetm by reason ofits live force will turn upward, touch the uppermost iron piece a, and attract it while turning with it the corner of the uppermost leaf n. Thereby the iron pieces a on the next lower leaves a are prevented from being attracted by the horseshoe-magnet m. The latter rebounds and holds the uppermost leaf a at a small dis tance from the next lower leaf. When it is desired to turn this music-leaf n, the pedal p is depressed to move the arm a from right to left, so that the horseshoe-magnet m takes along with it the leaf a. On the horseshoemagnet m striking against the ledge 7) it will be thereby turned upward, and thus detached from the iron piece 6 on the leaf n, so that the latter freely places itself on the uppermost left leaf a. On releasing the pedal 1) the spring will return the arm a to the initial position and cause the horseshoe-magnet m to seize in the described manner the uppermost right leaf 77. Then the apparatus will be ready to turn this leaf on depressing the pedal 7).

It will be evident that the axis A B of the arm a is parallel to the back of the musicbook, so that during the turning motion from right to left the arm (1/ remains parallel to the upper edge of the leaf a, (see Fig. 2,) which means that the horseshoe-magnet m does not slide at all on the iron piece (3 or get off the same during the motion, as is sometimes the case with other music-leaf turners of this kind. The leaf 72/ will remain smooth during the turning and will never get folded or creased. The insulating-plate is preferably employed to facilitate the detachment of the iron piece 0 from the horseshoe-magnet m.

It is a decided advantage of this music-leaf turner that the horseshoe-magnet m can never seize more than one leaf a at a time. After the horseshoe-magnet m has been detached from the uppermost left leaf by the ledge 71, it will never be able to turn back this leaf from left to right on the arm a, being returned to the initial position by the helical spring 71.

The music-leaf turner may be varied in many respects without deviating from the spirit of my invention.

The spring i may be arranged for normally holding the arm a in the extreme position on the left in Fig. 1, and the pedal 7) may be arranged for turning the arm a from left to right on being depressed.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a music-leaf turner, the combination with a desk placed nearly vertically, of an arm turnable on said desk in a plane at right angles thereto, means for turning said arm in either direction, a ledge on said desk, an adjustable sleeve on said arm, a horseshoe-magnet hinged to said adjustable sleeve and adapted to turn under the action of its live force for attracting a leaf carrying an iron piece and to turn on said ledge for releasing the leaf.

2. In a music-leaf turner, the combination with a desk placed nearly vertically, of an arm turnable on said desk in a nearly-horizontal plane at right angles thereto,,a spring connecting said arm with said desk and arranged for normally holding said arm in the one extreme position on one side, a pedal, means connecting said arm with said pedal so that on depressing the latter said arm is turned from its normal position to the opposite side, a ledge on said desk, an adjustable sleeve on said arm, a horseshoe-magnet hinged to said adjustable sleeve and adapted to turn under the action-of its live force for attracting a leaf carrying an iron piece and to turn on said ledge for releasing the leaf.

3. In a music-leaf turner, the combination with a desk placed nearly vertically, of an adjustable rule on said desk for supporting the music-book whose leaves when placed on the right are each provided on the upper right corner with an iron piece, an arm turning around an axis near and parallel to the hack of the music-book, means for turning said arm from right to left and vice versa, an adjustable sleeve on said arm, a horseshoe-magnet hinged to said adjustable sleeve and adapted to attract the iron pieces on the leaves one after the other, and a ledge on the upper edge of said desk and adapted to turn said horseshoe-magnet and to thereby detach it from the respective iron piece.

4. In a music-leaf turner, the combination with a desk placed nearly vertically, of a pin on the upper edge of said desk in an axis near and parallel to the back of the music-book, an adjustable rule on said desk for supporting the music-book whose leaves when placed on the right are each provided on the upper right corner with an iron piece, an arm mounted to turn on said pin in a plane at right angles to IIS its axis, a spring connecting said arm with said desk and arranged for normally holding said arm in the one extreme position on one side, a pulley on the nave of said arm, a pedal, means connecting said pulley With said pedal so that on depressing the latter said arm is turned from its normal position to the opposite side, an adjustable sleeve on said arm, a horseshoe-magnet hinged I to said adjustable sleeve, a ledge on the upper edge of said desk and adapted to turn said horseshoe-magnet and to thereby detach it from the iron piece of the respective leaf, and a stop on the upper In testimony whereof I have signed my name to this specification in the presence of two sub- 20 scribing Witnesses.

FRITZ VON HOLZHAUSEN.

Witnesses:

JEAN GRUND, CARL GRUND. 

